I believe for MES the contract cost is $50. Which means if I buy or sell 1 contract, the excess margin is reduced by $50.
I experimented and I could buy prettu much until the excess intraday margin is almost exhausted.
When this happens, no more orders can be submitted untill the position is flattened/reduced.
Is this the expected behaviour?
Also how can I get an instument's cost, e.g. MES is $50?
Many Thanks, Caesar.
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